需要金幣： 1000 個金幣 |
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| 折扣與優(yōu)惠：團(tuán)購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘 要:火力發(fā)電是我國發(fā)電行業(yè)的主力軍，在我國經(jīng)濟(jì)發(fā)展中占有重要的地位。輸煤系統(tǒng)是火力發(fā)電廠的一個重要組成部分，但是輸煤系統(tǒng)的范圍大，現(xiàn)場壞境十分惡劣。利用傳統(tǒng)的輸煤系統(tǒng)不僅會極大地?fù)p害工人的身體健康，而且在輸煤控制系統(tǒng)中，經(jīng)常會有皮帶跑偏、皮帶撕裂、犁煤器誤動等故障，從而不能把燃煤準(zhǔn)時地送到指定煤倉，這樣就會大大降低火電廠的發(fā)電效率。隨著發(fā)電廠規(guī)模和機(jī)主容量的日越擴(kuò)大，火電廠對燃煤的需求量也大大提高，所以，傳統(tǒng)的輸煤系統(tǒng)己經(jīng)無法滿足現(xiàn)在火電廠的生產(chǎn)需要。 本文基于日本三菱的FX2N系列PLC，設(shè)計了某火力發(fā)電廠輸煤控制系統(tǒng)。主要設(shè)計的是卸煤與配煤和上煤這三大部分的程序，其中卸煤部分的控制中包括起動、停止、緊急停止和故障停止四個部分。上煤部分的程序本設(shè)計選擇用步進(jìn)指令編程，各設(shè)備間都設(shè)有安全的連鎖保護(hù)控制功能。通過本次設(shè)計的模擬運(yùn)行，可以為輸煤系統(tǒng)在實際應(yīng)用中提供一定的理論依據(jù)。 關(guān)鍵詞：火力發(fā)電廠 ； 可編程控制器；輸煤控制系統(tǒng)
ABSTRACT:The thermal power is the main force of China's power industry occupies an important position in China's economic development. The coal handling system is an important part of the coal-fired power plants, coal handling systtm, the site bad environment is very bad. The use of traditional coal handling system will not only greatly damage the health of workers, but also the the conveyer control systems, there is often a belt deviation belt tear, the coal plow malfunction, such as failure, and thus can not punctual coal-fired to the designated coal bunker, which would greatly reduce the power generation efficiency of thermal power plants. Thermal power plant coal demand is also greatly improved, with more to expand the scale of power plants and the main day of capacity, the In traditional coal handling system has been unable to meet the production needs of the thermal power plant. This article is based on Mitsubishi FX2N Series PLC design of a thermal power plant coal handling control system. Designed primarily coal unloading and coal blending and coal on the three parts of the program, which the coal unloading part of the control including start, stop, emergency stop and failure to stop four parts. Coal part of the process of the design choices the programming step instructions, each device has a safety interlock protection control functions. The design of the simulation run, in practical applications to provide a theoretical basis for the coal handling system. Keywords: coal-fired power plants; programmable controller; coal handling control system |
